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Distributed ode with convection and diffusion equation

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Hi Guys,
I have added a distributed ode to one of my boundaries to be solved with my convection and diffusion equation. I am trying to use the difference of the average of outflow and inflow concentrations in this equation. How can I define these terms? When I use Average operators I donot get any thing. It seems my equations solve seperately.

Ode ( Ct): dct /dt = Q ( c at outflow - c at inflow)
C will be solved in convection and diffusion equation.
I will appriate if you answer my question.

Regards

0 Replies Last Post Mar 27, 2017, 9:06 a.m. EDT
COMSOL Moderator

Hello Ehsan Farno

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